In accordance with Delta Airlines Cancellation Policy, passengers have 24 hours to rectify errors or cancel scheduled tickets without paying the cancellation fee. No cancellation fee is imposed, when the traveler cancels scheduled tickets within 24 hours of booking. If passengers, for any reason, wish to cancel scheduled tickets after 24 hours, the airline imposes a cancellation fee according to the class of service or the destination of the passengers.
Passengers with flexible or refundable tickets are eligible for a refund after paying the cancellation fee per Delta's Cancellation Policy. All Flex ticket passengers can cancel tickets 24 hours prior to departure, refund amount is drawn after deduction of cancellation fees. The entire refund amount will be reverted to the respective account within 20 business days. https://www.cancellation-policy.com/delta-airlines-cancellation-policy